Cache and cookies

- [Instructor] As we browse the web,…our web browser builds up a series of files…and little pieces of information…that are intended to make the browsing experience…smoother, faster, and easier.…Generally speaking, these are called cache and cookies.…The cache stores information…that sites use to display pages;…things like images, scripts, and other files…that it makes sense to send once…and then store on your computer…in case they're needed again.…There's no reason, for example, for a website…to send its logo the first time you look at a page…and then send it again for every page that you browse to…that has the same logo.…

The logo is loaded from cache…every time a site asks to display it.…This makes for a faster browsing experience…because the file is coming from your computer…instead of from the web,…and it also saves on bandwidth,…for both the client and the site host.…Even fairly simple web pages are made up of many many files,…and though they're usually small,…repeatedly transferring even small files over and over again…

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Author

Updated

9/30/2019

Released

10/1/2018

Security isn't just a concern for the tech savvy among us. It matters to everyone with a digital footprint. In this course, instructor Scott Simpson shares practical tips that can help anyone broaden their knowledge of security—no technical pedigree required. Scott dives into topics ranging from password managers to phishing emails, sharing strategies and tools that can help you become more aware of your own security and how to keep your information safe.